package com.wj.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.wj.common.R;
import com.wj.dto.DishDto;
import com.wj.entity.Category;
import com.wj.entity.Dish;
import com.wj.entity.DishFlavor;
import com.wj.service.CategoryService;
import com.wj.service.DishFlavorService;
import com.wj.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;

    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.saveWithFlavor(dishDto);
        return R.success("新增菜品成功！");
    }

    /**
     * 菜品分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page {} , pageSize {}",page,pageSize);
        //构建分页构造器
        Page<Dish> pageInfo = new Page<>(page,pageSize);
        Page<DishDto> dishDtoPage = new Page<>();
        //添加条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //添加条件
        queryWrapper.like(name != null,Dish::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);
        //调用service
        dishService.page(pageInfo,queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");

        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list = records.stream().map((item)->{
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item,dishDto);
            Long categoryId = item.getCategoryId();//分类Id

            //根据id查询category对象
            Category category = categoryService.getById(categoryId);

            if (category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            return dishDto;
        }).collect(Collectors.toList());
        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息和对应口味信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id){
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }


    /**
     * 修改菜品
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);

        return R.success("修改菜品信息成功！");
    }


    /**
     * 删除菜品信息
     * @param ids
     * @return
     */
    @DeleteMapping
    public R<String> delete(@RequestParam List<Long> ids){
        log.info("删除菜品ids为：{}",ids);

        dishService.removeWithFlavor(ids);

        return R.success("删除菜品信息成功！");
    }


    /**
     * 修改菜品状态
     * @param status
     * @param ids
     * @return
     */
    @PostMapping("/status/{status}")
    public R<String> status(@PathVariable("status") Integer status,@RequestParam List<Long> ids){
        log.info("要修改的状态为status:{}",status);
        log.info("修改菜品的ids为：{}",ids);

        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //添加条件，查询传过来的id是否在数据库有数据
        queryWrapper.in(ids != null,Dish::getId,ids);
        List<Dish> list = dishService.list(queryWrapper);

        for (Dish dish :list) {
            if (dish != null){
                dish.setStatus(status);
                //执行修改操作
                dishService.updateById(dish);
            }
        }
        return R.success("修改状态成功！");
    }


//    @GetMapping("/list")
//    public R<List<Dish>> list(Dish dish){
//        //log.info(dish.getCategoryId().toString());
//        //构造条件查询器
//        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
//        //查询条件
//        queryWrapper.eq(dish.getCategoryId() != null,Dish::getCategoryId,dish.getCategoryId());
//        //只查询起售的菜
//        queryWrapper.eq(Dish::getStatus,1);//1起售 0禁售
//        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
//        List<Dish> list = dishService.list(queryWrapper);
//        return R.success(list);
//    }


    /**
     * 根据条件查询对应的菜品信息
     * @param dish
     * @return
     */
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
        //log.info(dish.getCategoryId().toString());
        //构造条件查询器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //查询条件
        queryWrapper.eq(dish.getCategoryId() != null,Dish::getCategoryId,dish.getCategoryId());
        //只查询起售的菜
        queryWrapper.eq(Dish::getStatus,1);//1起售 0禁售
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list = dishService.list(queryWrapper);

        List<DishDto> dishDtoList = list.stream().map((item)->{
            DishDto dishDto = new DishDto();
            //把每个dish对象拷贝给dishDto
            BeanUtils.copyProperties(item,dishDto);
            //分类id
            Long categoryId = item.getCategoryId();
            //根据分类id查询分类对象
            Category category = categoryService.getById(categoryId);

            if (category != null){
                //根据id查询分类的名称，并显示的list
                String categoryName = category.getName();
                //把categoryName传给dishDto的分类名称
                dishDto.setCategoryName(categoryName);
            }

            //当前菜品的id
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId,dishId);
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);
            return dishDto;
        }).collect(Collectors.toList());

        return R.success(dishDtoList);
    }


}
